梯顶围栏
The 200 kt/ a lube phenol extraction unit in Lanzhou Petroleum Processing and Chemical Complex was revamped. The previous mixed packing mainly containing ladder ring was replaced by TH ⅱ type double saddle ring packing. A ripple shape packing support was adopted.
兰州炼油化工总厂200kt/a润滑油苯酚精制装置将原萃取塔以阶梯环填料为主的混装填料改造为THⅡ型双鞍环填料,填料采用波纹状填料支承;
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